| original |
Early Cretaceous |
|
USSR(Ukrainian SSR) |
Bolkhovitina,N.A. Fossil and contemporaneous spores of the Family Schizaeaceae. |
1961 |
| details |
Early Cretaceous |
|
USSR(Caucasus) |
Bolkhovitina,N.A. Fossil and contemporaneous spores of the Family Schizaeaceae. |
1961 |
| original |
Albian |
|
USSR(Urals) |
Bolkhovitina,N.A. Fossil and contemporaneous spores of the Family Schizaeaceae. |
1961 |
| details |
Aptian |
Albian |
USSR(WSL) |
Ivanova,E.A. et al. Pollen and spores of Western Siberia; Jurassic to Paleocene. |
1961 |
| original |
Hauterivian |
|
USSR |
Bolkhovitina,N.A. Morphology of spores of the Schizaeaceae Family and the history of the family in the geological past. |
1959 |